将 MEAN 应用程序部署到 Heroku 会出现 H10 错误和 503 状态

Question

我正在学习 MEAN 堆栈并试图同时了解 Heroku 的工作原理。使用 this 教程，我组装了一个在我的机器上运行的工作应用程序。

当我尝试遵循 heroku 的 this tutorial and this 教程时，一切运行良好，直到我尝试 heroku open。

在 herokuapp.com 页面显示

Application Error
An error occurred in the application and your page could not be served. Please try again in a few moments.

If you are the application owner, check your logs for details.

A heroku logs --tail 读取

2015-08-14T19:31:20.459454+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=shrouded-coast-5761.herokuapp.com request_id=e09a152f-9b52-4433-be2d-5c5a40150da7 fwd="166.170.43.70" dyno= connect= service= status=503 bytes=

已找到存储库 here。

当我 heroku local web 应用程序运行正常时。

Answer 1

看起来配置有问题。当我查看您的回购协议时，数据库配置引起了人们的注意。在你的 app.js 的最后一行你有 mongoose.connect('mongodb://localhost/news'); 这是 heroku mongoose documentation

中的一些代码

var http = require ('http');             // For serving a basic web page.
var mongoose = require ("mongoose"); // The reason for this demo.

// Here we find an appropriate database to connect to, defaulting to
// localhost if we don't find one.
var uristring =
    process.env.MONGOLAB_URI ||
    process.env.MONGOHQ_URL ||
    'mongodb://localhost/HelloMongoose';

// The http server will listen to an appropriate port, or default to
// port 5000.
var theport = process.env.PORT || 5000;

// Makes connection asynchronously.  Mongoose will queue up database
// operations and release them when the connection is complete.
mongoose.connect(uristring, function (err, res) {
if (err) {
   console.log ('ERROR connecting to: ' + uristring + '. ' + err);
} else {
  console.log ('Succeeded connected to: ' + uristring);
}
});

您的应用似乎因缺少数据库连接而崩溃。

将 MEAN 应用程序部署到 Heroku 会出现 H10 错误和 503 状态

Deploying MEAN App to Heroku Gives H10 Error & 503 Status

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